Do you know if that includes Russia's onramp [gateway] to the Internet?
It's hard to say (I can't find any info on Russia's "gateway" as you call it)... but you blocked a whole /8 which is 16777216 IP addresses. You probably would have been better off blocking the individual ISP's that are causing you problems... using a /24 or maybe a /16.
__________________ Patrick William | RACK911 Labs | Software Security Auditing
300+ Vulnerabilities Found - Get a Quote @ http://www.RACK911Labs.com